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BOSTON MARATHON 2024

Jonathan Tsai

Bib: 5025•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 17%
Gender (Male)
#0 / 14578
Top 27%
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:38/mi
20:37
↑ 97↓ 3451.5%
10K· 6.21 mi
6:42/mi
41:26
↑ 79↓ 1380.4%
15K· 9.32 mi
6:42/mi
1:02:15
↑ 67↓ 78
20K· 12.43 mi
7:00/mi
1:23:59
↑ 106↓ 860.1%
Half· 13.11 mi
6:52/mi
1:28:40
↑ 19↓ 370.5%
25K· 15.53 mi
7:00/mi
1:45:38
↑ 66↓ 880.2%
30K· 18.64 mi
7:27/mi
2:08:48
↑ 181↓ 1480.2%
20M
7:33/mi
2:19:04
↑ 64↓ 500.2%
21M
8:13/mi
2:27:17
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:32:45
↑ 17↓ 861.7%
23M
7:49/mi
2:42:32
↑ 23↓ 630.6%
24M
7:52/mi
2:50:24
↓ 821.3%
40K· 24.85 mi
8:11/mi
2:57:24
↓ 200.3%
25.2M
9:25/mi
3:00:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:08:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:40
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:40:11
Pace7:39 /mi
📊Positive Split: 13.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3720:376:3820:37
6:38
-
10K
6.21 mi10:46:2641:266:4020:49
6:42
+0:04
15K
9.32 mi11:07:151:02:156:4120:49
6:42
0:00
20K
12.43 mi11:28:591:23:596:4521:44
7:00
+0:18
Half
13.11 mi11:33:401:28:406:464:41
6:52
-0:08
25K
15.53 mi11:50:381:45:386:4816:58
7:00
+0:08
30K
18.64 mi12:13:482:08:486:5523:10
7:27
+0:27
20M
20.00 mi12:24:042:19:046:5710:16
7:33
+0:06
21M
21.00 mi12:32:172:27:177:018:13
8:13
+0:40
35K
21.75 mi12:37:452:32:457:015:28
7:18
-0:55
23M
23.00 mi12:47:322:42:327:049:47
7:49
+0:31
24M
24.00 mi12:55:242:50:247:067:52
7:52
+0:03
40K
24.85 mi13:02:242:57:247:087:00
8:11
+0:19
25.2M
25.20 mi13:05:393:00:397:103:15
9:25
+1:14
Finish
26.22 mi13:13:513:08:517:128:12
8:03
-1:22

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:38 /mi

Average Pace

7:12 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:38

56% of race

Time at Steady Pace

48:41

26% of race

Time at Slower Pace

34:32

18% of race

Average Pace: 7:12 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:25:3720:376:3820:37
6:38
#4288
10K
6.21 mi10:46:2641:266:4020:49
6:42
#4292
15K
9.32 mi11:07:151:02:156:4120:49
6:42
#4128
20K
12.43 mi11:28:591:23:596:4521:44
7:00
#4412
Half
13.11 mi11:33:401:28:406:464:41
6:52
#4430
25K
15.53 mi11:50:381:45:386:4816:58
7:00
#4351
30K
18.64 mi12:13:482:08:486:5523:10
7:27
#4487
20M
20.00 mi12:24:042:19:046:5710:16
7:33
#4428
21M
21.00 mi12:32:172:27:177:018:13
8:13
#4390
35K
21.75 mi12:37:452:32:457:015:28
7:18
#4333
23M
23.00 mi12:47:322:42:327:049:47
7:49
#4276
24M
24.00 mi12:55:242:50:247:067:52
7:52
#4269
40K
24.85 mi13:02:242:57:247:087:00
8:11
#4277
25.2M
25.20 mi13:05:393:00:397:103:15
9:25
#4312
Finish
26.22 mi13:13:513:08:517:128:12
8:03
#4417
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4288403740373934(Top 15%)3704(Top 25%)3704(Top 76%)
10K6.21 mi3.10 mi4292-44042-54042-54314(Top 17%)4044(Top 28%)4044(Top 83%)
15K9.32 mi3.11 mi4128+1643879+1633879+1633934(Top 15%)3704(Top 25%)3704(Top 76%)
20K12.43 mi3.11 mi4412-2844111-2324111-2325216(Top 20%)4744(Top 33%)4744(Top 98%)
Half13.11 mi0.68 mi4430-184124-134124-134918(Top 19%)4495(Top 31%)4495(Top 93%)
25K15.53 mi2.42 mi4351+794059+654059+654339(Top 17%)3982(Top 27%)3982(Top 82%)
30K18.64 mi3.11 mi4487-1364142-834142-834879(Top 19%)4261(Top 29%)4261(Top 88%)
20M20.00 mi1.36 mi4428+594078+644078+644541(Top 18%)3936(Top 27%)3936(Top 81%)
21M21.00 mi1.00 mi4390+384033+454033+454980(Top 19%)4087(Top 28%)4087(Top 84%)
35K21.75 mi0.75 mi4333+573975+583975+584189(Top 16%)3592(Top 25%)3592(Top 74%)
23M23.00 mi1.25 mi4276+573901+743901+744844(Top 19%)3882(Top 27%)3882(Top 80%)
24M24.00 mi1.00 mi4269+73876+253876+255897(Top 23%)4401(Top 30%)4401(Top 91%)
40K24.85 mi0.85 mi4277-83858+183858+186666(Top 26%)4684(Top 32%)4684(Top 97%)
25.2M25.20 mi0.35 mi4312-353874-163874-168340(Top 33%)5483(Top 38%)5483(Top 113%)
Finish26.22 mi1.02 mi4417-1053934-603934-608780(Top 34%)5796(Top 40%)5796(Top 120%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21story building
+97ft-345ft

Overall

3934

Males

3704

M18-39

3704

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4314

Males

4044

M18-39

4044

10K→15K

6.2 - 9.3 mi

Top 15%
×3story building
+67ft-78ft

Overall

3934

Males

3704

M18-39

3704

15K→20K

9.3 - 12.4 mi

Top 20%
×5story building
+106ft-86ft

Overall

5216

Males

4744

M18-39

4744

20K→Half

12.4 - 13.1 mi

Top 19%
×2story building
+19ft-37ft

Overall

4918

Males

4495

M18-39

4495

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4339

Males

3982

M18-39

3982

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

4879

Males

4261

M18-39

4261

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

4541

Males

3936

M18-39

3936

20M→21M

20.0 - 21.0 mi

Top 19%
×8story building
+106ft-24ft

Overall

4980

Males

4087

M18-39

4087

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4189

Males

3592

M18-39

3592

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

4844

Males

3882

M18-39

3882

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

5897

Males

4401

M18-39

4401

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6666

Males

4684

M18-39

4684

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8340

Males

5483

M18-39

5483

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

8780

Males

5796

M18-39

5796

Passing Analysis

Category:
Athletes Passed
1446
Passed By
1575
Net Change
-129
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4288
5K → 10K177181-4#4288#4292
10K → 15K22056+164#4292#4128
15K → 20K86370-284#4128#4412
20K → Half2341-18#4412#4430
Half → 25K17798+79#4430#4351
25K → 30K153289-136#4351#4487
30K → 20M12364+59#4487#4428
20M → 21M10264+38#4428#4390
21M → 35K7922+57#4390#4333
35K → 23M12063+57#4333#4276
23M → 24M7770+7#4276#4269
24M → 40K6472-8#4269#4277
40K → 25.2M1752-35#4277#4312
25.2M → Finish28133-105#4312#4417
TOTALS14461575-129
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing